Mi plibonigas mia Esperanto = I improve my esperanto
Mia Esperanto plibonigxas = my esperanto is improving
"My Esperanto" is surely an English idiom, meaning, "My ability in Esperanto"
Another explanation is the "plibonigi" is transitive, it takes an object, you have to say what is being improved. While "pliboniĝas" refers to itself, is reflexive, does not take an object.
pli bona means just better, so "mia esperanto plibonas ol mia hispana" means my esperanto is better than my spanish. you need to use plibonigi for "to make better" and pliboniĝi for "to get better"
but plibona is an adjective while plibonas is a verb right? so better doesnt do plibonas justice does it? im also having trouble understanding the ig igx suffix ...i have flashes of understanding but the insight is only fleeting....mi estas idioto =)
Ne plu ol iu de ni, Jo.
Plibonas just means "is better" (estas plibona) and if the sentence was "My Esperanto is better." it would leave us asking "than what?" Or, it would be because you saw someone else's Esperanto and saw a great many obvious, to you, errors in it.
The other forms of the word are well enough covered above that I don't need to repeat them.
If you say My Esperanto pliboniGas and Mia Esperanto pliboniĜas is the same, bacause in english to say My Esperanto is improving and My Esperanto is getting beter is the same too!
Aŭ... ĉu mi malpravas?
I think "Mia Esperanto plibonigas..." means "My Esperanto improves... (something)", like "Mia Esperanto plibonigas mian hispanan" - "My Esperanto improves my Spanish" (The more Esperanto I learn, the better I know/understand Spanish).
Ohh..... I can see what you mean, if we stop ans analyse it ''My Esperanto plibonigas'' means *My Esperanto make better......(something)! Thanks adamyoung97!
I wrote "my esperanto becomes better", but this was not accepted by the program. Maybe it is not good English (la angla ne estas mia gepatra!)